PLATE IV. 



Fig. 1-4. Epipremnum crassum, p. 71. Seeds, side view. y Swalmen. 



» 5. Epipremnum crassum, p. 71. Abnormal seed, septate internally. — . Swalmen. 



» 6. Epipremnum crassum, p. 71. Seed, broken and showing the very thick testa, y. Swalmen. 



» 7. Epipremnum crassum, p. 71. 2 seeds adhering laterally (abnormal), y Swalmen. 



» 8. Epipremnum crassum, p. 71. Seed, dissected to show micropyle, hilum, and tegmen. — . 

 Swalmen. 



» 9. Epipremnum crassum, p. 71. Seed, ventral face y. Reuver. 



» 10. Epipremnum pinnatum, p. 71. Seed, ventral face. y. Recent. 



» 11. Epipremnum pinnatum, p. 71. Seed, side view. y. Recent. 



» 12. Epipremnum pinnatum, p. 71. Seed, longitudinal section, y Recent. 



» 13, 14. Epipremnum, sp., p. 72. Seeds, y. Reuver. 



» 15—17. Pterocarya limburgensis, p. 73. Endocarps, side view. y. Reuver. 



» 18. Pterocarya limburgensis, p. 73. Endocarp, interior, y. Reuver. 



» 19—21. Pterocarya limburgensis, p. 73. Endocarps, seen from above, and showing variation of the 

 ribs. y. Reuver. 



» 22, 23. Pterocarya hupehensis, p. 73. Endocarps, side view. y. Recent, China. 



» 24, 25. Pterocarya hupehensis, p. 73. Endocarps, seen from above, y. Recent, China. 



» 26, 27. Pterocarya caucasica, p. 73. Endocarps. y. Recent. 



» 28a, b. Carya angulata, p. 74. Broken endocarp. y. Reuver. 



» 29. Carya angulata, p. 74. Broken endocarp. y. Reuver. 



» 30, 31. Carpinus Betulus, p. 74. Nuts. y. Swalmen. 



» 32, 33. Carpinus Betulus, p. 74. Nuts. y. Reuver. 



» 34. Corylus Avellana var., p. 75. Nut. y. Swalmen. 



» 35. Corylus Avellana var., p. 75. Nut. y. Reuver. 



» 36a, b. Betula ulmifolia, p. 75. Bract, y. Recent. 



» 37a, b. Betula digitata, p. 75. Bract, y. Swalmen. 



» 38. Betula digitata?, p. 75. Seed. y. Swalmen. 



» 39. Betula ulmifolia, p. 75. Seed. y. Recent. 



» 40. Betula sp., p. 76. Female catkin, y. Reuver. 



12 

 » 41. Betula sp., p. 76. Seed. y. Swalmen. 



4 

 » 42. Betula sp., p. 76. Male catkin, y. Reuver. 



4 



» 43. Betula sp., p. 76. Male catkin, y . Reuver. 



